don’t worry about the plastic look of the N4, worry about the plastic construction and cheaper components than the reloop.
For $100 you are getting peace of mind that you can get rough with your controller and have it stand up to the abuse. the N4 cannot boast the same way, and will inevitably need replacing within a year the same as any mixtrack if your not gentile.
The Original Mixdeck you will most likely find annoying due to the mixer section being analogue only (not midi), and the mixdeck quad is not designed to control 4 decks in software, only two with two separate analogue inputs, although you could potentially bypass the on board analogue mixer and make it control 4 decks as the mixer does send midi, but there is no support from numark, serato or atomix to make this happen.
If you have the coin you are better off getting an NS6/4track if you have to get Numark gear, Used & factory seconds are pretty reasonably priced, but you miss out on a warranty, and the NS6 doesn’t have the tra”k”ditional 4 knob, 4 button effect section if that is what you are after.
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